1、Standard Specification for Viscosity-Graded Asphalt Cement AASHTO Designation: M 226-80 (2012) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS-2b M 226-1 AASHTO Standard Specification for Viscosity-Graded Asphalt Ce
2、ment AASHTO Designation: M 226-80 (2012) 1. SCOPE 1.1. This specification covers asphalt binders graded by viscosity at 60C (140F) for use in pavement construction. Three sets of limits are offered in this specification. The purchaser shall specify the applicable table of limits. In the event the pu
3、rchaser does not specify limits, Table 1 shall apply. 1.2. The values stated in SI units are to be regarded as the standard. 2. MANUFACTURE 2.1. The asphalt binder shall be prepared for crude petroleum by suitable methods. 3. REQUIREMENTS 3.1. The asphalt binder shall be homogeneous, free from water
4、, and shall not foam when heated to 175C (347F). 3.2. The asphalt binders shall conform to the requirements given in Tables 1, 2, or 3, as specified by the purchaser. 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of app
5、licable law.TS-2b M 226-2 AASHTO Table 1Requirements for Asphalt Binder Graded by Viscosity at 60C (140F) (Grading Based on Original Asphalt) Viscosity Grade Test AC-2.5 AC-5 AC-10 AC-20 AC-40 Viscosity, 60C (140F), Pas (P) 25 5 (250 50) 50 10 (500 100) 100 20 (1000 200) 200 40 (2000 400) 400 80 (40
6、00 800) Viscosity, 135C (275F), mm2/smin 80 100 150 210 300 Penetration, 25C (77F), 100 g, 5 smin 200 120 70 40 20 Flash point, COC, C (F)min 163 (325) 177 (350) 219 (425) 232 (450) 232 (450) Solubility in trichloroethylene, percentmin 99.0 99.0 99.0 99.0 99.0 Tests on residue from thin-film oven te
7、st: Viscosity, 60C (140F), Pas (P)max 100 (1000) 200 (2000) 400 (4000) 800 (8000) 1600 (16000) Ductility, 25C (77F), 5 cm/min, cmmin 100a100 50 20 10 Spot test (when and as specified)bwith: Standard naphtha solvent Naphtha-xylene solvent, percent xylene Heptane-xylene solvent, percent xylene Negativ
8、e for all grades Negative for all grades Negative for all grades aIf ductility is less than 100 cm, material will be accepted if ductility at 15.6C (60F) is 100 cm minimum. bThe use of the spot test is optional. When it is specified, the engineer shall indicate whether the standard naphtha solvent,
9、the naphtha-xylene solvent, or the heptane-xylene solvent will be used in determining compliance with the requirement, and also, in the case of xylene solvents, the percentage of xylene to be used. Table 2Requirements for Asphalt Binder Graded by Viscosity at 60C (140F) (Grading Based on Original As
10、phalt) Viscosity Grade Test AC-2.5 AC-5 AC-10 AC-20 AC-30 AC-40 Viscosity, 60C (140F), Pas (P) 25 5 (250 50) 50 10 (500 100) 100 20 (1000 200) 200 40 (2000 400) 300 60 (3000 600) 400 80 (4000 800) Viscosity, 135C (275F), mm2/smin 125 175 250 300 350 400 Penetration, 25C (77F), 100 g, 5 smin 220 140
11、80 60 50 40 Flash point, COC, C (F)min 163 (325) 177 (350) 219 (425) 232 (450) 232 (450) 232 (450) Solubility in trichloroethylene, percentmin 99.0 99.0 99.0 99.0 99.0 99.0 Tests on residue from thin-film oven test: Loss on heating percentmaxa 1.0 0.5 0.5 0.5 0.5 Viscosity, 60C (140F), Pas (P)max 10
12、0 (1000) 200 (2000) 400 (4000) 800 (8000) 1200 (12000) 1600 (16000) Ductility, 25C (77F), 5 cm/min, cmmin 100b100 75 50 40 25 Spot test (when and as specified)cwith: Standard naphtha solvent Naphtha-xylene solvent, percent xylene Heptane-xylene solvent, percent xylene Negative for all grades Negativ
13、e for all grades Negative for all grades aThe use of loss on heating requirement is optional. bIf ductility is less than 100 cm, material will be accepted if ductility at 15.6C (60F) is 100 cm minimum. cThe use of the spot test is optional. When it is specified, the engineer shall indicate whether t
14、he standard naphtha solvent, the naphtha-xylene solvent, or the heptane-xylene solvent will be used in determining compliance with the requirement, and also, in the case of xylene solvents, the percentage of xylene to be used. Table 3Requirements for Asphalt Binder Graded by Viscosity at 60C (140F)
15、(Grading Based on Residue from Rolling Thin-Film Oven Test) Tests on Residue from AASHTO Test Method T 240aViscosity Grade AR-10 AR-20 AR-40 AR-80 AR-160 Viscosity, 60C (140F), Pas (P) 100 25 (1000 250) 200 50 (2000 500) 400 100 (4000 1000) 800 200 (8000 2000) 1600 400 (16000 4000) Viscosity, 135C (
16、275F), mm2/smin 140 200 275 400 550 Penetration, 25C (77F), 100 g, 5 smin 65 40 25 20 20 Percent of original penetration, 25C (77F)min 40 45 50 52 Ductility, 25C (77F), 5 cm/min, cmmin 100b100b75 75 75 Tests on original asphalt: Flash point, COC, C (F)min 205 (400) 219 (425) 227 (440) 232 (450) 238
17、(460) Solubility in trichloroethylene, percentmin 99.0 99.0 99.0 99.0 99.0 a AASHTO T 179 (Thin-Film Oven Test) may be used, but AASHTO T 240 shall be the referee method. b If ductility is less than 100 cm, material will be accepted if ductility at 15.6C (60F) is 100 cm minimum. 2015 by the American
18、 Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.TS-2b M 226-3 AASHTO 4. METHODS OF SAMPLING AND TESTING 4.1. Sampling and testing of asphalt binders shall be in accordance with the following standard methods of the American
19、 Association of State Highway and Transportation Officials: R 66, Sampling Asphalt Materials T 44, Solubility of Bituminous Materials T 48, Flash and Fire Points by Cleveland Open Cup T 49, Penetration of Bituminous Materials T 51, Ductility of Asphalt Materials T 102, Spot Test of Asphaltic Materia
20、ls T 179, Effect of Heat and Air on Asphalt Materials (Thin-Film Oven Test) T 201, Kinematic Viscosity of Asphalts (Bitumens) T 202, Viscosity of Asphalts by Vacuum Capillary Viscometer T 240, Effect of Heat and Air on a Moving Film of Asphalt Binder (Rolling Thin-Film Oven Test) 2015 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applicable law.
